When you look at the video showing the murder, it leaves investigators with one question.

FOX 2: "You have to wonder if he knew his killer or killers?"

"Most likely he did," said Det. Patrick Lane, Detroit police. "The video does show someone was waiting for him."

Police say Holloway just left his girlfriend's house on his way home right before the shooting. Angela Holloway said she received text messages from her son earlier in the evening regarding arguments he had with people in the neighborhood.

However, police say they have brought several people for questioning, but they have not been able to develop a solid lead.

"You have to speak up and let people know what's going on," Angela said. "Our city is coming together. They're building. They're bringing people back. Don't let the crime take it back down under."

If you have any information on this case give the DPD a call or Crime Stoppers at 1-800-SPEAK-UP. You will remain anonymous.